/*
 * @Description: 
 * @Author: zoe
 * @Date: 2024-09-20 16:11:45
 * @LastEditors: rendc
 * @LastEditTime: 2024-09-20 16:11:45
 */
class Main{
    public static void main(String[] args) {
        A a = new B();
        a.ahow();
    }
}
